0000000000885070

AUTHOR

Ulrich G. Volkmann

showing 2 related works from this author

Dipolar and Quadrupolar Freezing in(KBr)1−x(KCN)x

1986

Dipolar and quadrupolar susceptibility measurements are reported for the molecular glass system ${(\mathrm{KBr})}_{1\ensuremath{-}x}{(\mathrm{KCN})}_{x}$ covering a wide range of frequencies. The results allow a direct comparison of the dipolar and quadrupolar anomalies and demonstrate unambiguously that the freezing in of the dipolar and quadrupolar degrees of freedom occurs at different temperatures.

Condensed Matter::Quantum Gaseschemistry.chemical_classificationMaterials scienceDielectric dispersionDegrees of freedom (physics and chemistry)General Physics and AstronomyCondensed Matter::Soft Condensed MatterCrystallographyDipoleNuclear magnetic resonancechemistryMolecular motionCondensed Matter::Strongly Correlated ElectronsInorganic compoundSolid solutionPhysical Review Letters
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Ellipsometric thickness and coverage of physisorbed layers of Xe, Kr, Ar and N2 on graphite

1990

Multilayer isotherms of Xe, Kr, Ar and N2 physisorbed on graphite (001) have been studied by ellipsometry. It is shown that the model of Dignam and Fedyk provides an excellent basis for the interpretation of the ellipsometric thickness in terms of the coverage and the polarizability of the admolecules. For N2 conclusions concerning the orientation of the molecule are drawn.

ArgonKryptonchemistry.chemical_elementMineralogyNoble gasSurfaces and InterfacesCondensed Matter PhysicsMolecular physicsSurfaces Coatings and FilmsXenonPhysisorptionchemistryEllipsometryPolarizabilityMaterials ChemistryGraphiteSurface Science
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